Phy 103: Fundamentals of Physics III 1Instructor: Tony ZableExperiment: ElectrostaticsObjectives: This activity is qualitative in nature and is intended to give you practical experience in electrostatics. During this exercise you will:o Explore the interaction between objects of similar chargeo Explore the interaction between objects of opposite chargeo Explore the interaction between a charged object and a conducting objecto Determine whether the color of a balloon determines its ability to accumulate excess electric chargeMaterials:o Scotch (transparent tape)o One or two balloonso Electrostatics kito Meter stickIntroduction:The objects around us are made up of atoms and molecules, the tiny building blocks of matter. The atoms themselves are made up of neutrons, protons and electrons. Protons and electrons have electric charge of opposite polarity but equal magnitude whereas neutrons are neutral (they have no charge). Protons have positive charge (+) and electrons have negative charge (-). The electric charges of the protons and electrons are necessary for holding the structure of the atom together. In this experiment, we will explore the interactions between various charged objects along with their interaction with non-charged objects.Procedure:1) Pull a couple of strips of Scotch tape from a roll. Each one should be about 12-20 cm long. Hold them up by their ends then slowly bring them side-by-side. a) What happens?b) What is the reason for their behavior?c) Do they carry opposite or like charges? 2) One at a time, pass each of the strips of tape lightly but completely between your fingers, then hold the two strips near each other again. Now what happens? Why?3) Fold over a couple of centimeters of the end of each strip. This gives you a non-stickyhandle to work with. Carefully stick the two strips to each other so the sticky side of one strip adheres to the dry side of the other. Now grasp the tabs and rapidly peel the strips apart. Keep them distantly separated then slowly bring them together again. a) Now what happens?Phy 103: Fundamentals of Physics III 2Instructor: Tony Zableb) Do they carry opposite or like charges?c) Were they charged before you pulled them apart?d) Where did the charge come from?e) Does their total amount of charge change?4) Neutralize both pieces of tape again by rubbing them, and then repeat the previous step, this time with the sticky sides together. Does it work? Why or why not?5) When rubbed against your hair, a balloon becomes negatively charged (i.e. takes electrons from your hair). Now blow up two balloons. Do not rub them against your hair or clothing. Considering what happened in the previous step, do you think that you can create static electricity by rubbing the two electrically neutral balloons together? Why or why not? Try it.6) Remember in step 1 you were able to recognize that the tape was charged, but unable to identify whether it was positive or negative. Now, using a balloon, devise an experiment to determine the sign of the charge on a piece of tape after it is pulled from the roll. What is the charge of the tape after it is pulled from the roll?7) Which side of the tape tends to give up electrons? Which side tends to steal them?8) Paper is a reasonably good conductor compared to plastic tape. Explain why maskingtape does not work well for this activity.Phy 103: Fundamentals of Physics III 3Instructor: Tony Zable9) What happens when you bring a neutral, metal object (not in direct contact with your hand) close to a suspended charged object (such as a charged piece of tape)? 10) Give a detailed explanation of what is happening in step 9 on an atomic level. What term describes this phenomenon? Should your observation depend upon the type of charge on the suspended object?11) Locate the electrostatics kit. What happens when you charge the clear plastic rod then hold it close to a lightly running stream of tap water? Why?12) Steps 9-11 involved induction with materials known to be good conductors. Interestingly, this can be observed even in materials that are not good conductors, although the molecular interaction is slightly different in this case. Balance the center of mass of a meter stick on the edge of your table so that the end on the table just barely rises off of the surface. Now charge the clear plastic rod and bring it slowly up under the lower end of the meter stick. Surprised? Explain how this could happen even though the electrons in the wood are not free to move throughout the material.13) Rub a balloon against your hair so that it will stick to the wall. The wall is not a good conductor, so the mechanism here is the same as in the previous step. Draw a picture of the wall and balloon indicating as usual the role of the charges involved.Phy 103: Fundamentals of Physics III 4Instructor: Tony ZableThe Finale:14) I have read (but haven’t yet verified) that different colored balloons retain charge to a different extent because of the various dyes used. Design an experiment to test this claim, and rate the different colors. Describe your experiment (include a simple diagram of our set-up).15) Record your observations for this balloon experiment. 16) What can you conclude from your experiment? Does color really affect the charge retention of a balloon?17) Summarize your whole lab